10368 | | Sovereign Opal | ANONYMOUS | Agriculture Canada-Progress in Research, 27 | 1987 | | 27 |
854 | | Dictionnaire encyclopédique des cépages et de leurs synonymes | GALET, P. | Éditions Libre & Solidaire (M.E.C.) | 2015 | SOVEREIGN OPAL | 1032 |
505 | | Dictionnaire Encyclopédique des Cépages | GALET, P. | Hachette | 2000 | SOVEREIGN OPAL | 745 |
10367 | | "Sovereign Opal" grape | REYNOLDS, A.G.; DENBY, L.G.; STRACHAN, G.E.; BOUTHILLIER, M. | HortScience 23 (3) 642-643 | 1988 | SOVEREIGN OPAL | 642 |
40827 | | Triomphe d'Alsace complex | RÖCKEL, F. ET AL. | in preparation | 2020 | SOVEREIGN OPAL | |
40482 | | BÖLN-Projekt: Weiterentwicklung von Wissenstransfer- und Informationssystemen zur nachhaltigen Nutzung rebengenetischer Ressourcen | RÖCKEL, F.; MAUL, E.; TÖPFER, R. | in preparation | 2014-2016 | SOVEREIGN OPAL | Suppl. |
450 | | Liste Internationale des Variétés de Vigne et de leurs Synonymes | O.I.V. | O.I.V., Paris | 1996 | SOVEREIGN OPAL | 54 |
104 | | Evaluation of German grape cultivars and German viticultural techniques in theOkanagan Valley, British Columbia | ANONYMOUS | Viticulture Committee of the Association of British Columbia Grape Growers, Kelowna | 1985 | | 9 |
841 | | Grapevine Breeding Programs for the Wine Industry | REYNOLDS, A. G. | Woodhead Publishing Series in Food Science, Technology and Nutrition, Nr. 268 | 2015 | SELECTION 166 (SOVEREIGN OPAL) | 330 |